Antifriction-bearing.



E. O. OHATHAM.

ANTIPRIGTION BEARING.

IIIIIIIIIIIIIIIII AK.26, 1910.

' Patented 00t.18,1910.

I /Z z N W k: TTORNEY ANTIFEICTION-BEARING.

Specification of Letters Patent.

Patented Oct. 18, 1910.

Application filed March 26, 1910. Serial No. 551,781.

To all whom it may concern:

Belt known that I, EDWIN C. GHATHAM, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Antifriction-Bearings, of which the following is a specifica tion.

My invention relates to improvements in antifrictional bearings for shafts and other revoluble parts.

It consists in the combination of rollers. balls and bearing sleeve, and in details of construction which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a transverse section along the line wa of Fig. 2; Fig. 2 is a section along the line yy of Fig. 1. Fig. 3 is a section alongthe line 2- 2 of Fig. 2. Fig. 4 is an enlarged view of the joint.

It is the object of my invention to provide a combination of roller and ball bearings in s. manner as to reduce the friction to less then could be effected by either of such such bearings separately.

in t e drawings, A is a shatt which is dei signed to be supported and turnable within a box or bearing 2. The shaft is here shown with a reduced bearing portion, and around this is loosely fitted a sleeve 3 whiclr'may be made of Babbitt or other suitable antifrictional metal. Between the periphery of this sleeve and the box 2 are fitted the rollers 4-. The ends of tlfese rollers are beveled shown at 5, and the ends of the box 2 and the outer periphery of the ring 3 are so formed as to fit these beveled ends as clearlyshown in Fig. 2, and when the parts are assembled the rollers are thus prevented from end: play. The parts 2 and 3 have grooves or channels 6 opposed to each other, and the rollers 4 have corresponding grooves 7 which register with the grooves (3. I havc in the present case shown two sets of these grooves at suitable-distances from the ends of the rollers.

8 are rings here shown as having beveled edges and having the interior surfaces made concave, and so formed that the balls 9 lie between the concavities of the grooves 7 and the concavities of the rings 8, these forming the ball races. The rings 8 have a sli 'htly larger diameter than the oxteriOr o the rollers, and as every alternate roller is provided \viththe grooves and rings, it will be seen that the peripheries of the rings 8 will contact with the intermediate rollers which are not grooved. Thus the independent movements of the rings on the ball bearings,' and the independent movement of the in-' terior sleeve 3, provide for the greatest freedom from friction.

In order to assemble the balls within the rings 8, I have shown these rings made in two parts which are united by joints as shown at 10. These joints may be made in any suitable 0r convenient manner. I have shown them in Fig. 4 asformed by notches in the end of one of the parts 8, and a corresponding tongue 8 in the meeting end of the other ring, this tongue entering the slot in the part 8. The tongue has an opening made transversely throughit, within which is located a sprin 11.

12 are locks w ich fit and are slidable transversely in this opening, and when in position they are forced outwardly by the action of the spring 11, and their outer ends are thus forced into slots or channels 18 which are made/in the sides of the slot 1n the portion 8. Thus when the rings are to be assembled, it is only necessary to compress the blocks 12 against the spring 11 which yields for that purpose sufficiently to brin the outer surfaces of the blocks flush with the surface of the tongue, when the tongue may be entered into the channel in the opposing end, and when the blocks arein line to register with the depressions 13, the spring will force them outward, and thus lock them in place, and the rings will, to all intents and purposes, be solid and continuous. The combined operation will then be that all the rollers form a bearing between the outer case or box 2 and the'inner ring 3. The grooves in these parts admit the rings 8 which in turn rest upon the interior balls 9 in the rollers '7. The rings having a slight projection beyond the periphery of the alter nate rollers in which they are fitted, will form contact with the intermediate plain rollers, and being freel turnable, will reduce the friction whic would otherwise take place between the rollers, whose surfaces will always move in op osite directions. The sleeve 3 being a c ose turnable fit about the shaft- A, it will be seen that any binding or stiffness of movement, of the balls and rollers, if such should occur, will be relieved by the movement of the sleeve, and in like manner the sleeve might move sleeve so that oil may pass terior of the box, said rollers having coneshaped ends and having peripheral grooves or channels removed from the ends, and the ends of the box and sleeve having beveled walls corresponding to the ends of the rolling cone-shape ers, balls fitting said grooves or channels, and rings surrounding the ,balls and confining the latter in the grooves or channels.

2. An antifrietional shaft bearing consisting of an exterior box or case, and an interior sleeve loosely turnable about the shaft, rollers interposed between the sleeve and the interior of the box, said rollers having eone-shaped ends, and alternate rollers having grooves or channels, and the box and sleeve having corresponding grooves, rings fitting said grooves and forming with the rollers ball races, and balls fitting said races and surroundin the rollers, saidrollers havehds and said box or case and sleeve having internal end walls fashioned to fit the ends of the roller 3. The combination in an antifrictional bearing, of an exterior box, a sleeve fitting and turnable about the journaled portion of the shaft, rollers fittin and turnable between the box and the s eeve, said rollers and forming independent bearings of the sleeve and the in-,.

having cone-shaped ends, and a correspond ing formation of the interior of the box and the exterior of the-sleeve, grooves formed in the rollers, and corresponding grooves in the case and. sleeve, balls fitting said grooves 01' the rollers, and rings surrounding the balls and confining them 111 place.

4. The combination in an antifrictional bearing, of. a sleeve fittin and turnable about the journal portion 0 a shaft, an exterior box, said sleeve and box having corresponding annular grooves, rollers having grooves which register with those of the box and sleeve, balls fitting said rollers, rings forming with the rooves of the rollers ball races, said rings eing fitted to alternate rollers and projecting to form bearing contacts-with intermediate plain rollers of the bearing. 7 l

5. In a combined ball and roller bearing, a sleeve loosely fitting the journaled portion of a shaft, an exterior box, alternate plain and grooved rollers inter osed between the box and the sleeve, rings tting the grooves, and forming; exterior races for the balls, and contacts with the intermediate plain rollers, said rings bein made in sections with uniting tongues an grooves, and spring-pressed blocks whereby said meeting ends are locked together. i. v

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

G. H. STRONG, CHARLES EDELMAN. 

